题解 | 找出每个学校GPA最低的同学
找出每个学校GPA最低的同学
https://www.nowcoder.com/practice/90778f5ab7d64d35a40dc1095ff79065
select a.device_id, a.university,a.gpa from (select *,row_number()over(partition by university order by gpa asc) as ranking from user_profile)a where ranking =1
注意partition by分组后,取排名为1时,不用再加group by